443 Error Code For Centaur Tractor Models
There are 2 kind of error description.
Decelerator or Hand Throttle (STD cab) 5 Volt Supply voltage is too low
Foot Throttle 5 Volt Supply voltage is too low (engine controller pin B29)
Hissing noise at expansion valve, Loss of refrigerant.Restriction in refrigerant system.Check receiver-dryer for uniformity of temperature.